About Customer.io
Where your product event becomes a message.
Customer.io was founded in 2012 by Colin Nederkoorn as a messaging platform wired to product events rather than to a marketing list. It has grown into a full customer engagement stack with Journeys for orchestration, Audiences for behavioural segmentation, Data Pipelines for CDP-style event collection, and channels across email, SMS, push and in-app. The company reports over seven thousand four hundred brands using it, with Notion, Buffer, Attio and IMAX among the named customers, skewing heavily to SaaS and product-led teams.
The reason to pull Customer.io into a warehouse is that it reports on the send and not on what the send caused. Journey conversion inside the tool stops at the click or the in-app tap. Activation twenty-eight days later, paid conversion after the trial, retention in month three, and the subscription that renewed all live outside Customer.io by design. Next to Stripe charges, product usage and support tickets, the same Customer.io journey gets one honest number: how many of the users it touched became paying customers who stayed.